To get the specification of a particular definition ID for a source or destination, you can use the Airbyte API or the Octavia CLI. For the Airbyte API, you can refer to the [API documentation](https://docs.airbyte.com/understanding-airbyte/airbyte-api) to make the appropriate API call to get the specification. For the Octavia CLI, you can use the

octavia get source <SOURCE_ID>

or

octavia get destination <DESTINATION_ID>

commands to get the details of a specific source or destination, including their specifications. Replace

<SOURCE_ID>

or

<DESTINATION_ID>

with the appropriate ID. Here's an example for getting a destination:

bash $ octavia get destination c0c977c2-48e7-46fe-9f57-576285c26d42 {  "destinationDefinitionId": "c0c977c2-48e7-46fe-9f57-576285c26d42",  "destinationId": "18102e7c-5160-4000-841b-15e8ec48c301",  "workspaceId": "18102e7c-5160-4000-883a-30bc7cd65601",  "connectionConfiguration": {  "user": "charles"  },  "name": "pg",  "destinationName": "Postgres" }

For more information on using the Octavia CLI, refer to the [CLI documentation](https://docs.airbyte.com/cli-documentation). Once you have the specification, you can use it to create the source or destination by following the appropriate steps in the [Airbyte documentation](https://docs.airbyte.com) or [tutorials](https://airbyte.io/tutorials).